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Simplifying (x2 + -10x + 21)(x2 + -10x + 21) = 0 Reorder the terms: (21 + -10x + x2)(x2 + -10x + 21) = 0 Reorder the terms: (21 + -10x + x2)(21 + -10x + x2) = 0 Multiply (21 + -10x + x2) * (21 + -10x + x2) (21(21 + -10x + x2) + -10x * (21 + -10x + x2) + x2(21 + -10x + x2)) = 0 ((21 * 21 + -10x * 21 + x2 * 21) + -10x * (21 + -10x + x2) + x2(21 + -10x + x2)) = 0 ((441 + -210x + 21x2) + -10x * (21 + -10x + x2) + x2(21 + -10x + x2)) = 0 (441 + -210x + 21x2 + (21 * -10x + -10x * -10x + x2 * -10x) + x2(21 + -10x + x2)) = 0 (441 + -210x + 21x2 + (-210x + 100x2 + -10x3) + x2(21 + -10x + x2)) = 0 (441 + -210x + 21x2 + -210x + 100x2 + -10x3 + (21 * x2 + -10x * x2 + x2 * x2)) = 0 (441 + -210x + 21x2 + -210x + 100x2 + -10x3 + (21x2 + -10x3 + x4)) = 0 Reorder the terms: (441 + -210x + -210x + 21x2 + 100x2 + 21x2 + -10x3 + -10x3 + x4) = 0 Combine like terms: -210x + -210x = -420x (441 + -420x + 21x2 + 100x2 + 21x2 + -10x3 + -10x3 + x4) = 0 Combine like terms: 21x2 + 100x2 = 121x2 (441 + -420x + 121x2 + 21x2 + -10x3 + -10x3 + x4) = 0 Combine like terms: 121x2 + 21x2 = 142x2 (441 + -420x + 142x2 + -10x3 + -10x3 + x4) = 0 Combine like terms: -10x3 + -10x3 = -20x3 (441 + -420x + 142x2 + -20x3 + x4) = 0 Solving 441 + -420x + 142x2 + -20x3 + x4 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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